/*
 * Copyright 2004-2009 the original author or authors.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.springmodules.validation.valang.predicates;

/**
 * Enumeration of different operator types.
 *
 * @author Steven Devijver
 * @author David Winterfeldt
 */
public enum Operator {

    EQUAL, NOT_EQUAL, 
    LESS_THAN, LESS_THAN_OR_EQUAL,
    GREATER_THAN, GREATER_THAN_OR_EQUAL,
    IN, NOT_IN, BETWEEN, NOT_BETWEEN, 
    NULL, NOT_NULL, 
    HAS_TEXT, HAS_NO_TEXT, HAS_LENGTH, HAS_NO_LENGTH,
    IS_BLANK, IS_NOT_BLANK, IS_WORD, IS_NOT_WORD,
    IS_UPPERCASE, IS_NOT_UPPERCASE, IS_LOWERCASE, IS_NOT_LOWERCASE

}
